package cn.edu.njust.dao;

import cn.edu.njust.entity.HitCourse;

import java.util.ArrayList;

public interface HitCourseDAO {
    int HitC(int uId,int cId);      //选课
    int ExitC(int uId,int cId);     //退课
    ArrayList<HitCourse> selectAll(int uId);
    HitCourse selectById(int uId, int cId);
}
